CVE-2021-32994 Softing OPC-UA C++ SDK Improper Restriction of Operations within the Bounds of a Memory Buffer
Attackers can crash the software by sending crafted packets to the Softing OPC UA C++ SDK due to improper memory buffer validation.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-32994?
CVE-2021-32994 is a high-severity memory corruption vulnerability in Softing OPC UA C++ SDK (Software Development Kit), published on 4 Apr 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Softing OPC UA C++ SDK (Software Development Kit) versions from 5.59 to 5.64 exported library functions don't properly validate received extension objects, which may allow an attacker to crash the software by sending a variety of specially crafted packets to access several unexpected memory locations.
Weakness: CWE-119
Which versions are affected by CVE-2021-32994?
It affects 1 product.
Products include Softing Opc Ua C\+\+ Software Development Kit.
How do I fix CVE-2021-32994?
No fix has been published for CVE-2021-32994 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-32994 being exploited?
There is no known exploitation of CVE-2021-32994 in the wild and no public exploit code.
Sources
Also known as GHSA-f933-7c3x-46v4.